Valve



. H. E. PELLETIER.

VALVE.

APPLICATION FILED Noves. 1920.v

Patented June M, H2L

LIIIILLIIIIL TEE/@DECES MFG'. 0F NEW? JERSEY.

CQ., ENC., F ELIZBETH, NEW' ERSEY, .il QERPGRATEN VAE'VE.

. application lecl November s, 1920.

Tc @ZZ whom t may concern Be it known that l, HENRY E. PELLETIER, aycitizen of the United States, residing in Newark, in the county ,of Essex, and 'State of NewV Jersey, have invented certain new and useful Improvements in Valves, of which the following is a specification.

lThis invention relates to improvements in valves, such as are used to control the inlet and exhaust ports of internal combustion engines, the valves consisting of disks, having beveled edges fitted to conical seats, against which they are normally held by spring pressure, the .valves being' periodically raised in sequence by cams or tappets iXed on a shaft actuated by the engine.`

In valves of this character it is requisitey that a close and tained between the der to insure ing or the en Experience shows that such fit is difficult to maintain, for the valves and seats are subject to erosion from the passage of both accurate joint be mainvalve and its seat in orproper and economical workgine.

l fresh and spent gases, the deposit of carbon and from the constant and rapid repetition of hammer-like blows of' the valve against its seat in closing, aggravated by the fact that the valve merely moves from and to its seat, so thatl identically the saine surfaces are always brought into repeated contact.

A. funtherdifiiculty is encountered by the disposition of the valve yto become distorted, both by transverse elongation'in one direction, thus assuming an elliptical shape, and in buckling in an axial plane, these chan es being caused by necessarily subjecting ifferent arts of the valve to difierent degrees o heat, caused by the eiiect of the explosions vbeing directed upon one part more than another, suiiicient to eii'ect the moleculesof the metal, creating a condition that necessitates frequent resurfacing and regrinding.

The object of this invention is to overcome these difficulties by providing a valve which rotates partially with respect to its seat at in the exhaust valves,

Specification of Letters Patent.

serial ne'. maeva equalize the internal stresses set up by the impingement of heated gases, and due to the rotary motion imparted to it, automatically free the contacting surfaces from any deposits, equalize the wear, producing a selgrinding etlect and maintaining an accurate joint at all times when the valve is closed.

This and other objects, which will become apparent as the description progresses, is

Patented J1 une tei, 1.921.,

each time it is raised, the eect being to attained by the novel construction and ar-l I rangement of parts hereinafter described and shown in the accompanying drawings, forming 'an essential partl of this disclosure, and in whichz- Figure 1 is a longitudinal sectional View showing aaconvent'ional Vtype of tappet valve and its operating means as arranged in conformity with the invention.

ig. 2 is a similar view taken in a plane at a rig t angle to Fig. l, the valve being in a raised position.

Fig. 8 is a bottom plan view of the rotator sleeve.

F ig. 4 is a diagrammatical View of the ro tator developed.

Fig. 5 is a top plan view of member of the rotator.

F ig. 6 is a fragmentary development of the same.

Referring to the drawings in detail, the numeral l0 designates the valve shaft of an internalexplosion engine, the same having secured to it one or more cams or tappets l1 arranged to operate the several proper sequence, the shaft being driven by the valve gear ofthe engine and supported the outer vin appropriate housings'iixed to its frame.

A casing 12 contains the ports, both inlet and exhaust, the chambers 13 communicat ing. with the source of fuel sup ly or outlet for spent gases as the case may he.

he'valve seats 14 are formed directly-in the element 12, in register with the chambers 13 and are of the usual conical type.

The casing l2 contains bored openings 15 leading to the chambers and frictlonally engaged therein is a sleeve or bushing 16 havvalves in -movable sphere 25 against which the cam or tappet 11 makes contact in raising the valve from its seat. i

The anti-friction device may be omitted if desired and the cam make direct contact on the end of the spindle.

' A tubularI sleeve 26 surrounds the lower end of the stem 19,the sleeve having an annularly flan ed base 27, between whichand the iange 1 is disposed ahelically coiled compression spring 28, guided by the collar 18 and exterior of the sleeve 26, the sleeve beingsecured to the spindle 23 bya pin 29 passing throughl both elements.

Thus at each revolution of the shaft 10 the valvewill be opened, and closed as the` cam continues to" rotate -by the spring 28, the action being purely axial.

In order to 'partiallyrotate the valve relative to its seat at each axial movement, the lower end of the stem 19 has formed on its outer surface a plurality of projections 30, resembling right angled triangles, arranged in uniformly spaced relation around the circumference of the stem, the bases of the triangles being toward the perpendiculars 31 alined with the axis of the stem.

A second series of projections I33 are formed at the extreme end of the stem, these being parallelograms with the lower corners removed, their upper longer edge 34 being arranged diagonally at substantially right angles to the diagonal faces 32 of the triangles, which, if the lines were extended would approximately-cut the `centers of the edges 34, while the end edges 35 are parallel with the perpendiculars.

Coperative internal elements 36 are formed with the extreme upper portion of the surrounding tubular element'26, these projections intersectingly 35 as the sleeve 26 moves over the stem 19, making contact-with the angular edges 32, causing a torsional or twisting effect, transmitted by the sleeve to the valve spindle, which is continued during its full outward movement.

' The projections 36 then engage with the `edges 34, as the sleeve moves 1n an yopposite direction, further increasing .the turning movement ofthe valve until it 1s again seatltion, taking place simultaneously,

constructed including many minor mod iiange 17 and their 'spindle guiding engaging the edges ear motion into intermittent rotary motion.

The direction of rotation of the valve as shown is clock-wise, but this depends on the disposition of the spiral paths between the angular edges 32 and 34, while the -degree of angularity or pitch given theseedges is "dependent upon the number of projections used and which corresponds to the/fractional portion of a revolution it is desired to impart to the valve at each lineal movement, four being indicated, although any number from three to eight may be used with good results.

From the foregoing it will be clear that that the action imparted to the valve is a compound of longitudinal and rotary mo- ,but not uniformly, as the valve is moved straight out at thel commencement, then relatively slowly turned-as it approaches the limit of its outward movement, allowed to partially close by a straight movement and accelerated rotary movement at the latter part, causing it to contact upon the seat-with grinding action. l

lhis action eectively cleans from any deposits of carbon or,

a rubbing or the surfaces the like vand faces assuring atight disk valve to heat uniformly in its different portions.

. The foregoing disclosure is to be regarded as descriptiveand illustrative only, and not as restrictive or limitative of thev invention, of which obviously an embodiment mayi be 1 cations without departing from the general scope herein indicated and denoted in the appended claims:

1.' Avalve of the ing adisk, a seat receptive of the disk, a spindle on said disk, means for guidingsaid spindle, a sleeve fixed on the s lndle, means for intermittently ymoving sai spindle and disk in an axial plane and integral means formed on said sleeve coperative with said means for partially rotating spindle at each axial movelass described comprissaid valve an ment thereof.

2. A valve of the class described comprising a disk, a seatreceptive thereof, a spindie fixed on said disk, a guide for said spindle, a sleeve surrounding the lower end of said guide, said sleeve being fixed to the spindle, means for-imparting intermittent rectilinear motion to said spindle, means formed exteriorly on thev lower end ofsaid guide and integral means formed internal of said sleeve coperative with said second named means whereby the sleeve,'spindle and disk are caused to partially rotate at each rectilinear movement thereof.

3. A valve ofthe class described comprising a disk, a seat receptive thereof, a spindle fixed on said disk, a guide for said spindle, a sleeve fixed on said guide enters, means for moving said spindle and sleeve reetilinearly in said guide and cooperatvelmeans formed with said guide and sleeve respectively whereby said valve disk is directed to rise from the seat axially, parspindle into Which saidtially rotate when raised and make Contact with its seat with a rotary motion.

his specification signed and witnessed this fourth day of November, 1920.

HENRY E. PELLETIER. Witnesses:

EDWARD, A. GITT, FREDK C. FISCHER.' 

